Product Description

The AR102 102mm Achromatic Refractor Telescope from Explore Scientific features a doublet achromatic lens system which virtually eliminates chromatic and spherical aberrations. This translates to a distortion-free viewing experience with true color rendition across the entire field of view.

The scope uses a heavy-duty 2" Crayford-style focuser. Unlike a traditional rack-and-pinion focuser, a Crayford-style uses a steel rod held tightly against the focus tube. This toothless friction system eliminates backlash and enables ultra-fine precision focusing. The combination of aberration-free optics, precision focusing and a fast f/6.5 focal ratio make this telescope ideally suited for wide-field astrophotography and astroimaging.

A mounting cradle-ring clamps over optical tube assembly (OTA). This lets the user adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balancing, while avoiding interference with other equipment. The scope is offered without a mount or tripod, but a Vixen-style dovetail plate makes it compatible with any alt-az or equatorial mount with a Vixen-style saddle.

Optical Performance

Aperture: 102mm

Focal ratio: f/6.5

Focal length: 663mm

Refractor-style optical design

Low dispersion achromatic doublet lens system

Achromatic lenses eliminate chromatic and spherical aberrations for true color rendition and without distortion across the entire field of view

8x50 non-illuminated finderscope with quick-release bracket

Focuser

2" diameter focuser

Dual-speed Crayford-style

Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash

Mount

User-supplied mount and tripod required

Vixen-style dovetail plate included

Compatible with any alt-az or equatorial mount with a Vixen-style saddle

Cradle-ring assembly for plate allows the scope orientation to be changed based on mount configuration